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Research

The HDF Group's formal comment to a DOE request on stewardship for scientific and high-performance computing was published in the Federal Register. We had a joint position paper at January's ASCR Workshop on Visualization for Scientific Discovery, Decision-Making, & Communication. The paper is called Whither Visualization Logic and was written by Leigh Orf (University of Wisconsin), Lucas Villa Real (IBM Research), and Gerd Heber (The HDF Group). Thomas Caswell (active h5py contributor, Brookhaven National Laboratory) also has a position paper called Visualization of Structured Data. Additionally, we have two position papers at the ASCR Workshop on the Management and Storage of Scientific Data. The first was led by Jerome Soumagne (The HDF Group), The Twilight of I/O as a User Concept and is joint work with Andres Marquez from the PNNL....

February 14, 2022

The group at BioSimulations.org has been doing some very interesting work using HSDS on Kubernetes to store biomodelling data and visualizing the results using Vega as described in the paper below. Biosimulations chose to use HSDS due to its support for very large data sets,  REST API (for use with web applications), and its ability to run on Google Cloud as well as on-premise installations. ...

February 1, 2022

The HDF Group’s technical mission is to provide rapid, easy and permanent access to complex data. FishEye's vision is "Synthesizing the world’s real-time data". This white paper is intended for embedded system users, software engineers, integrators, and testers that use or want to use HDF5 to access, collect, use and analyze machine data. FishEye has developed an innovative process that provides the most efficient method to expose data from embedded systems that simplifies and liberates data for real-time analysis, machine learning, and cloud-enabled services....

December 8, 2020

We are pleased to post this white paper from The HDF Group intern, Chen Wang. This paper looks at the steps of analyzing and tuning the HACC-IO benchmarks, the impact of different access patterns, stripe settings and HDF5 metadata. It also compares the five benchmarks on two different parallel file systems, Lustre and GPFS and shows that HDF5 with proper optimizations can catch up the pure MPI-IO implementations. An I/O Study of ECP Applications...

October 19, 2020

On February 6, 2020, the members of the ECP ExaIO project, Elena Pourmal and Scot Breitenfeld (The HDF Group), Quincey Koziol (NERSC), and Suren Byna (LBNL), presented HDF5 Tutorial at the ECP Annual Meeting. We've posted the slide deck and Q&A for your convenience....

February 20, 2020

Why do we use HDF5? We moved to HDF5 for our simulation data in 2016 from using our own proprietary file format. HDF5 had been on our radar for some time and we spent a couple of years investigating it and other file formats before deciding which we should switch to. HDF5 met all the criteria we had at the time. Amongst the criteria were: performance in speed and size, an accepted standard for scientific data, being open source, providing additional tools....

August 14, 2019
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